1431232123 has 4 divisors (see below), whose sum is σ = 1443898008. Its totient is φ = 1418566240.

The previous prime is 1431232111. The next prime is 1431232147. The reversal of 1431232123 is 3212321341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1431232123 - 2¹⁷ = 1431101051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1431232094 and 1431232103.

It is not an unprimeable number, because it can be changed into a prime (1431232423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6332773 + ... + 6332998.

It is an arithmetic number, because the mean of its divisors is an integer number (360974502).

Almost surely, 2^1431232123 is an apocalyptic number.

1431232123 is a deficient number, since it is larger than the sum of its proper divisors (12665885).

1431232123 is a wasteful number, since it uses less digits than its factorization.

1431232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12665884.

The product of its digits is 864, while the sum is 22.

The square root of 1431232123 is about 37831.6286062337. The cubic root of 1431232123 is about 1126.9466538119.

Adding to 1431232123 its reverse (3212321341), we get a palindrome (4643553464).

The spelling of 1431232123 in words is "one billion, four hundred thirty-one million, two hundred thirty-two thousand, one hundred twenty-three".